Single Molecule Spectroscopy using Probe Microscope

扫描隧道显微镜（STM）不仅是一种在原子尺度上观察表面结构的显微镜，而且是一种具有高空间分辨率和能量分辨率的电子点源。STM作用光谱（STM- as）是分析由STM尖端发射的电子激发的单个分子的反应。我们通过精心设计的实验和理论模型计算，成功地建立了隧穿电子非弹性激发过程的机理和随后的单分子动力学。

Scanning Tunneling Microscopy (STM) is not only a microscope to observe surface structure in atomic scale but also a point source of electrons of both high spatial and energy resolutions. Action spectroscopy with STM (STM-AS) is to analyze the reactions of a single molecule excited by electrons emitted from a sharp STM tip. We have successfully established the mechanism on inelastic excitation processes by tunneling electrons and the subsequent dynamics of a single molecule by using well-designed experiments and theoretical model calculations.